Mineral exploration, development, and extraction history

Assume Nikko used the successful efforts method to account for exploration costs.

Complete the following table using the successful efforts method of accounting.

The balance sheet amounts should be presented as at the year$-$end of December

Note also that when the ore is extracted, capitalized exploration and

development $(E+D)$ costs are amortized using a units$-$of$-$production depletion rate,

which is the accumulated deferred costs divided by the estimated units of ore

discovered units$).$